Lock-bolt.



H. HUGHBY. V

5 BOLT, APPLIOATION FILED M ,1911. RENEWED JAN. 7, 1913.

1,053,604, Patented Feb. 18, 1913.

2 SHEETSr-SHEET 1.

I IYIICE L H. HUGHEY.

LOOK BOLT. V MAY2, 1911. RENEWED JAN. 'I 1913.

Patented Feb. 18, 1913.

2 SHEETS-SHEET 2.

HENRY HUGHEY, OF SOUTH DUDSWELL, QUEBEC, CANADA.

LOCK-BOLT.

Specification of Letters Patent.

Patented Feb. 18,191 3.

Application filed Kay 2, 1911, Seriol, No. 824,595. Renewed January 7, 1913,. Serial No. 740,694.-

I c a l wlwnl ay m: Beit. known that H NR H G e subject. of the King of England, residin at South Dudswell, in the Province of Que cc, Dominion of Canada, have invented certain new and useful Improvements in Lock- Bolts; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it upper tains to make and use the same.

This invention relates to lock bolts and the obic'ct of the invention is to provide a novel'and ellicient device of this character '15 adapted for use in connection with machinery, railroad construction and like uses wherein the parts are subject to severe strains and jars so as to positively prevent bolts from becoming loose and thus avoidan ing serious accidents.

A specific object of the invention is to provide a bolt w th, elong tudlual slot haw mg a some; of serrations or teeth adapted to engage with similarly formed teeth of a :5 lockingpin of resilient construction, thereby efficientl A still further object of the invention is to provide a. locking pin which is provided with a longitudinal slot forming a resilient so ortion adapted to permit the pin to be ully inserted in the slot of the bolt, when the bolt is positioned through an object to be secured.

With these and other objects in view the M invention consists of certain other combinations and arrangements of parts as will be hereinafter more fully described and clailned, it being a still further object to provide a device which will not be likely.

to get out of working order,

In the drawings :.-F igure 1 is a longitudinal sectional view of the preferred embod'iment of my invention applied ti) two sections-z of material which are to be s cured together. Fig; 2 is an end view thereof. Fig. 3 a detail perspective view of a locking key employed in connection with the device. Fig. 4 is a detailed view of the nut employed. Fig. 5 is a view similar to Fig. 1, but showing a slightly modified construction. Fig. 6 is an end view thereof. Fig. 7 is a. detailed erspective view of a. locking pin employed ig. 8 iso detail view of the nut. :65 Referring to the drawings in detail, there are shown two sections .10 and 11 which are serving to hold a nut on the bolt..

adapted to besecured together, each of the sections being provided with corresponding openings adapted to snugly receive a headed bolt 12 havin threads 13 upon one end adapted. for tfie securing of a nut 14 on the bolt. By reference to Fig. 1 of the drawings .it will be teen that the bolt 12 is provided with a longitudinal slot 15 which tapers from the surrounding face of the bolt toward its outer end to provide an inclined wall 16 which is provided with a series of notches or serrations 17 which have vertical inner walls and inclined outer walls so as to permit the insertion of the looking pm 18 but to' prevent withdrawal thereof. The pin 18 is provided with a series of teeth 19 adapted to engage with the serrations formed in the slot 15 of the bolt 12, the shank of the lpin being tapered to form a point 20 and aving a tapered slit 21 forming a supplementary resilient shank 22 which 18 adapted to be depressed when the pin is inserted and to contact with the bores of the sections secured together and to be depressed thereby without causing mutilation of the teeth as in ordinary wedge keys. The pin 18 is provided with a head 23 which is adapted to fit into a slot 24 formed in the wall of the threaded bore 25 of the nut 14 when the pin is in position and the nut is threaded upon'the bolt, thereby preventing rotationof the nut and rendering it impossible for the sections to become separated and the nut in order to be removed must be cut.

In the modified form shown in Fig. 5 of the drawings, the bolt 12 is formed in a similar manner and is adapted to receive a looking pin '26,,snid locking pin being provided with a longitudinalslot 27 throughout its length and providing an upper or supple mentary resilient shank 28 and a lower shank 29 which is provided with teeth 30 adapted to engnge the serrations 17 of the bolt. In this construction a nut 31 is threaded upon the bolt and instead of providin the slot 24, the head of the in is provided with opposite flanges 32 WlllCll are adapted to engage the outer face of the nut and prevent removal thereof without cutting oil the head of the in.

In use, when t e pin is inserted in the slot of the bolt, the upper or su plementary shank portion of the pin will e depressed b reason of its resiliency and tapered end, allowing the teeth to slide over theserrethe pin to be forced to tions formecbin the slot, thereby allowing a tightened to engage the securing nut without mutilatby a wedge-pin. the nut will be positively held in position,

thereby securely holding the sections to-.

gether and proving especially advantageous 1n railroad construction, machinery and such devices which are vsubject to constant jar.

' I claim 1. In a lock bolt, the combination with a position lngthe teeth or partsas ol diharily' caused. It.will thus be seen that bolt having a taper d slot; of a nut engaged upon the boltand a pin having a supplementary resilient shank portiontapered slot formed with serrations, a nut threaded on the bolt and a locking pin in sorted in the slot to prevent removal of the nut, said pin having a slotforming a resilient supplementary shank, the shank gage the serrations and hold the pin against 1 proper having teeth formed thereonto en- 1 removal and also engaging the nut to hold it against displacement, s'ald'supplementary shank being adapted to contact with the bore of the sections securedv together and permit of the teeth to be forced over the serrations.

3. In a lock bolt, a bolt having a longi- 'tudinal. tapered slot communicating with 1ts outer end, the bottom wall of the slot-being formed with serrations, a nut engaged on the bolt and a pin engaged through the bore of thenut" and fitted in the slot beyond the nut, said pin having a longitudinal slot forming a pair of pointed shanks, one-of said shanks being provided with teeth adapted to engage the notches of the bolt and the other shank being adapted to be resiliently depressed upon insertion in the bolt by contact with the parts secured together to hold the teeth engaged with the notches and prevent removal of the pin without mutilation thereof, said pin having a head engaging the nut atits outer portion.

In testimony whereof, I afiix mysignature, in presence of two witnesses.

' HENRY HUGHEY.

Witnesses:

ALDEN LEARNED,

GEO. HILLIAM.' 

